2 * Copyright (c) 2019 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <sys/socket.h>
18 #include <vnet/session/application.h>
19 #include <vnet/session/transport.h>
20 #include <vnet/session/session.h>
21 #include <vlib/unix/plugin.h>
22 #include <vpp/app/version.h>
24 #include <vppinfra/lock.h>
26 #include <quic/quic.h>
27 #include <quic/certs.h>
28 #include <quic/error.h>
29 #include <quic/quic_crypto.h>
31 #include <quicly/defaults.h>
33 static char *quic_error_strings[] = {
34 #define quic_error(n,s) s,
35 #include "quic_error.def"
39 static quic_main_t quic_main;
40 static void quic_update_timer (quic_ctx_t * ctx);
41 static int quic_on_client_connected (quic_ctx_t * ctx);
44 quic_ctx_alloc (u32 thread_index)
46 quic_main_t *qm = &quic_main;
49 pool_get (qm->ctx_pool[thread_index], ctx);
51 memset (ctx, 0, sizeof (quic_ctx_t));
52 ctx->c_thread_index = thread_index;
53 QUIC_DBG (3, "Allocated quic_ctx %u on thread %u",
54 ctx - qm->ctx_pool[thread_index], thread_index);
55 return ctx - qm->ctx_pool[thread_index];
59 quic_ctx_free (quic_ctx_t * ctx)
61 QUIC_DBG (2, "Free ctx %u", ctx->c_c_index);
62 u32 thread_index = ctx->c_thread_index;
64 memset (ctx, 0xfb, sizeof (*ctx));
65 pool_put (quic_main.ctx_pool[thread_index], ctx);
69 quic_ctx_get (u32 ctx_index, u32 thread_index)
71 return pool_elt_at_index (quic_main.ctx_pool[thread_index], ctx_index);
75 quic_ctx_get_if_valid (u32 ctx_index, u32 thread_index)
77 if (pool_is_free_index (quic_main.ctx_pool[thread_index], ctx_index))
79 return pool_elt_at_index (quic_main.ctx_pool[thread_index], ctx_index);
83 quic_get_conn_ctx (quicly_conn_t * conn)
86 conn_data = (u64) * quicly_get_data (conn);
87 return quic_ctx_get (conn_data & UINT32_MAX, conn_data >> 32);
91 quic_store_conn_ctx (quicly_conn_t * conn, quic_ctx_t * ctx)
93 *quicly_get_data (conn) =
94 (void *) (((u64) ctx->c_thread_index) << 32 | (u64) ctx->c_c_index);
98 quic_ctx_is_stream (quic_ctx_t * ctx)
100 return (ctx->flags & QUIC_F_IS_STREAM);
104 quic_ctx_is_listener (quic_ctx_t * ctx)
106 return (ctx->flags & QUIC_F_IS_LISTENER);
110 get_stream_session_from_stream (quicly_stream_t * stream)
113 quic_stream_data_t *stream_data;
115 stream_data = (quic_stream_data_t *) stream->data;
116 ctx = quic_ctx_get (stream_data->ctx_id, stream_data->thread_index);
117 return session_get (ctx->c_s_index, stream_data->thread_index);
121 quic_make_connection_key (clib_bihash_kv_16_8_t * kv,
122 const quicly_cid_plaintext_t * id)
124 kv->key[0] = ((u64) id->master_id) << 32 | (u64) id->thread_id;
125 kv->key[1] = id->node_id;
129 quic_sendable_packet_count (session_t * udp_session)
132 u32 packet_size = QUIC_MAX_PACKET_SIZE + SESSION_CONN_HDR_LEN;
133 max_enqueue = svm_fifo_max_enqueue (udp_session->tx_fifo);
134 return clib_min (max_enqueue / packet_size, QUIC_SEND_PACKET_VEC_SIZE);
137 static quicly_context_t *
138 quic_get_quicly_ctx_from_ctx (quic_ctx_t * ctx)
140 app_worker_t *app_wrk;
142 app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_id);
145 app = application_get (app_wrk->app_index);
146 return (quicly_context_t *) app->quicly_ctx;
149 static quicly_context_t *
150 quic_get_quicly_ctx_from_udp (u64 udp_session_handle)
152 session_t *udp_session;
154 udp_session = session_get_from_handle (udp_session_handle);
155 app = application_get (udp_session->opaque);
156 return (quicly_context_t *) app->quicly_ctx;
160 quic_ack_rx_data (session_t * stream_session)
165 quicly_stream_t *stream;
166 quic_stream_data_t *stream_data;
169 quic_ctx_get (stream_session->connection_index,
170 stream_session->thread_index);
171 ASSERT (quic_ctx_is_stream (sctx));
172 stream = sctx->stream;
173 stream_data = (quic_stream_data_t *) stream->data;
175 f = stream_session->rx_fifo;
176 max_deq = svm_fifo_max_dequeue (f);
178 ASSERT (stream_data->app_rx_data_len >= max_deq);
179 quicly_stream_sync_recvbuf (stream, stream_data->app_rx_data_len - max_deq);
180 QUIC_DBG (3, "Acking %u bytes", stream_data->app_rx_data_len - max_deq);
181 stream_data->app_rx_data_len = max_deq;
185 quic_disconnect_transport (quic_ctx_t * ctx)
187 QUIC_DBG (2, "Disconnecting transport 0x%lx", ctx->udp_session_handle);
188 vnet_disconnect_args_t a = {
189 .handle = ctx->udp_session_handle,
190 .app_index = quic_main.app_index,
193 if (vnet_disconnect_session (&a))
194 clib_warning ("UDP session 0x%lx disconnect errored",
195 ctx->udp_session_handle);
199 quic_connection_delete (quic_ctx_t * ctx)
201 tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
202 clib_bihash_kv_16_8_t kv;
205 QUIC_DBG (2, "Deleting connection %u", ctx->c_c_index);
207 ASSERT (!quic_ctx_is_stream (ctx));
210 if (ctx->timer_handle != QUIC_TIMER_HANDLE_INVALID)
212 tw = &quic_main.wrk_ctx[ctx->c_thread_index].timer_wheel;
213 tw_timer_stop_1t_3w_1024sl_ov (tw, ctx->timer_handle);
216 /* Delete the connection from the connection map */
218 quic_make_connection_key (&kv, quicly_get_master_id (conn));
219 QUIC_DBG (2, "Deleting conn with id %lu %lu from map", kv.key[0],
221 clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 0 /* is_add */ );
223 quic_disconnect_transport (ctx);
226 quicly_free (ctx->conn);
229 session_transport_delete_notify (&ctx->connection);
234 quic_increment_counter (u8 evt, u8 val)
236 vlib_main_t *vm = vlib_get_main ();
237 vlib_node_increment_counter (vm, quic_input_node.index, evt, val);
240 struct st_quic_event_log_t
242 quicly_event_logger_t super;
246 quic_event_log (quicly_event_logger_t * _self, quicly_event_type_t type,
247 const quicly_event_attribute_t * attributes,
248 size_t num_attributes)
250 if (type == QUICLY_EVENT_TYPE_PACKET_LOST)
252 QUIC_DBG (1, "QUIC packet loss");
253 quic_increment_counter (QUIC_ERROR_PACKET_DROP, 1);
257 quicly_event_logger_t *
258 quic_new_event_logger ()
260 struct st_quic_event_log_t *self;
262 if ((self = clib_mem_alloc (sizeof (*self))) == NULL)
265 *self = (struct st_quic_event_log_t) {{quic_event_log}};
271 quic_free_event_logger (quicly_event_logger_t * _self)
273 struct st_quicly_default_event_log_t *self = (void *) _self;
274 clib_mem_free (self);
278 * Called when quicly return an error
279 * This function interacts tightly with quic_proto_on_close
282 quic_connection_closed (quic_ctx_t * ctx)
284 QUIC_DBG (2, "QUIC connection %u/%u closed", ctx->c_thread_index,
287 /* TODO if connection is not established, just delete the session? */
288 /* Actually should send connect or accept error */
290 switch (ctx->conn_state)
292 case QUIC_CONN_STATE_READY:
293 /* Error on an opened connection (timeout...)
294 This puts the session in closing state, we should receive a notification
295 when the app has closed its session */
296 session_transport_reset_notify (&ctx->connection);
297 /* This ensures we delete the connection when the app confirms the close */
298 ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED;
300 case QUIC_CONN_STATE_PASSIVE_CLOSING:
301 ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED;
302 /* quic_proto_on_close will eventually be called when the app confirms the close
303 , we delete the connection at that point */
305 case QUIC_CONN_STATE_PASSIVE_CLOSING_APP_CLOSED:
306 /* App already confirmed close, we can delete the connection */
307 session_transport_delete_notify (&ctx->connection);
308 quic_connection_delete (ctx);
310 case QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED:
313 case QUIC_CONN_STATE_ACTIVE_CLOSING:
314 session_transport_delete_notify (&ctx->connection);
315 quic_connection_delete (ctx);
324 quic_send_datagram (session_t * udp_session, quicly_datagram_t * packet)
327 session_dgram_hdr_t hdr;
330 transport_connection_t *tc;
332 len = packet->data.len;
333 f = udp_session->tx_fifo;
334 tc = session_get_transport (udp_session);
335 max_enqueue = svm_fifo_max_enqueue (f);
336 if (max_enqueue < SESSION_CONN_HDR_LEN + len)
338 QUIC_DBG (1, "Too much data to send, max_enqueue %u, len %u",
339 max_enqueue, len + SESSION_CONN_HDR_LEN);
340 return QUIC_ERROR_FULL_FIFO;
343 /* Build packet header for fifo */
344 hdr.data_length = len;
346 hdr.is_ip4 = tc->is_ip4;
347 clib_memcpy (&hdr.lcl_ip, &tc->lcl_ip, sizeof (ip46_address_t));
348 hdr.lcl_port = tc->lcl_port;
350 /* Read dest address from quicly-provided sockaddr */
353 ASSERT (packet->sa.sa_family == AF_INET);
354 struct sockaddr_in *sa4 = (struct sockaddr_in *) &packet->sa;
355 hdr.rmt_port = sa4->sin_port;
356 hdr.rmt_ip.ip4.as_u32 = sa4->sin_addr.s_addr;
360 ASSERT (packet->sa.sa_family == AF_INET6);
361 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &packet->sa;
362 hdr.rmt_port = sa6->sin6_port;
363 clib_memcpy (&hdr.rmt_ip.ip6, &sa6->sin6_addr, 16);
366 ret = svm_fifo_enqueue (f, sizeof (hdr), (u8 *) & hdr);
367 if (ret != sizeof (hdr))
369 QUIC_DBG (1, "Not enough space to enqueue header");
370 return QUIC_ERROR_FULL_FIFO;
372 ret = svm_fifo_enqueue (f, len, packet->data.base);
375 QUIC_DBG (1, "Not enough space to enqueue payload");
376 return QUIC_ERROR_FULL_FIFO;
379 quic_increment_counter (QUIC_ERROR_TX_PACKETS, 1);
385 quic_send_packets (quic_ctx_t * ctx)
387 quicly_datagram_t *packets[QUIC_SEND_PACKET_VEC_SIZE];
388 session_t *udp_session;
390 size_t num_packets, i, max_packets;
391 quicly_packet_allocator_t *pa;
392 quicly_context_t *quicly_context;
395 /* We have sctx, get qctx */
396 if (quic_ctx_is_stream (ctx))
397 ctx = quic_ctx_get (ctx->quic_connection_ctx_id, ctx->c_thread_index);
399 ASSERT (!quic_ctx_is_stream (ctx));
401 udp_session = session_get_from_handle_if_valid (ctx->udp_session_handle);
410 /* TODO : quicly can assert it can send min_packets up to 2 */
411 if (quic_sendable_packet_count (udp_session) < 2)
414 quicly_context = quic_get_quicly_ctx_from_ctx (ctx);
417 clib_warning ("Tried to send packets on non existing app worker %u",
418 ctx->parent_app_wrk_id);
419 quic_connection_delete (ctx);
422 pa = quicly_context->packet_allocator;
425 max_packets = quic_sendable_packet_count (udp_session);
428 num_packets = max_packets;
429 if ((err = quicly_send (conn, packets, &num_packets)))
432 for (i = 0; i != num_packets; ++i)
434 if ((err = quic_send_datagram (udp_session, packets[i])))
437 pa->free_packet (pa, packets[i]);
440 while (num_packets > 0 && num_packets == max_packets);
443 if (svm_fifo_set_event (udp_session->tx_fifo))
445 session_send_io_evt_to_thread (udp_session->tx_fifo,
447 clib_warning ("Event enqueue errored %d", err);
449 QUIC_DBG (3, "%u[TX] %u[RX]", svm_fifo_max_dequeue (udp_session->tx_fifo),
450 svm_fifo_max_dequeue (udp_session->rx_fifo));
451 quic_update_timer (ctx);
455 if (err && err != QUICLY_ERROR_PACKET_IGNORED
456 && err != QUICLY_ERROR_FREE_CONNECTION)
457 clib_warning ("Quic error '%U'.", quic_format_err, err);
458 quic_connection_closed (ctx);
462 /*****************************************************************************
464 * START QUICLY CALLBACKS
465 * Called from QUIC lib
467 *****************************************************************************/
470 quic_on_stream_destroy (quicly_stream_t * stream, int err)
472 quic_stream_data_t *stream_data = (quic_stream_data_t *) stream->data;
474 quic_ctx_get (stream_data->ctx_id, stream_data->thread_index);
475 session_t *stream_session =
476 session_get (sctx->c_s_index, sctx->c_thread_index);
477 QUIC_DBG (2, "DESTROYED_STREAM: session 0x%lx (%U)",
478 session_handle (stream_session), quic_format_err, err);
480 stream_session->session_state = SESSION_STATE_CLOSED;
481 session_transport_delete_notify (&sctx->connection);
483 quic_ctx_free (sctx);
488 quic_on_stop_sending (quicly_stream_t * stream, int err)
491 quic_stream_data_t *stream_data = (quic_stream_data_t *) stream->data;
493 quic_ctx_get (stream_data->ctx_id, stream_data->thread_index);
494 session_t *stream_session =
495 session_get (sctx->c_s_index, sctx->c_thread_index);
496 clib_warning ("(NOT IMPLEMENTD) STOP_SENDING: session 0x%lx (%U)",
497 session_handle (stream_session), quic_format_err, err);
499 /* TODO : handle STOP_SENDING */
504 quic_on_receive_reset (quicly_stream_t * stream, int err)
506 quic_stream_data_t *stream_data = (quic_stream_data_t *) stream->data;
508 quic_ctx_get (stream_data->ctx_id, stream_data->thread_index);
510 session_t *stream_session =
511 session_get (sctx->c_s_index, sctx->c_thread_index);
512 clib_warning ("RESET_STREAM: session 0x%lx (%U)",
513 session_handle (stream_session), quic_format_err, err);
515 session_transport_closing_notify (&sctx->connection);
520 quic_on_receive (quicly_stream_t * stream, size_t off, const void *src,
523 QUIC_DBG (3, "received data: %lu bytes, offset %lu", len, off);
526 session_t *stream_session;
527 app_worker_t *app_wrk;
529 quic_stream_data_t *stream_data;
532 stream_data = (quic_stream_data_t *) stream->data;
533 sctx = quic_ctx_get (stream_data->ctx_id, stream_data->thread_index);
534 stream_session = session_get (sctx->c_s_index, stream_data->thread_index);
535 f = stream_session->rx_fifo;
537 max_enq = svm_fifo_max_enqueue_prod (f);
538 QUIC_DBG (3, "Enqueuing %u at off %u in %u space", len, off, max_enq);
539 if (off - stream_data->app_rx_data_len + len > max_enq)
541 QUIC_DBG (1, "Error RX fifo is full");
544 if (off == stream_data->app_rx_data_len)
546 /* Streams live on the same thread so (f, stream_data) should stay consistent */
547 rlen = svm_fifo_enqueue (f, len, (u8 *) src);
548 stream_data->app_rx_data_len += rlen;
549 ASSERT (rlen >= len);
550 app_wrk = app_worker_get_if_valid (stream_session->app_wrk_index);
551 if (PREDICT_TRUE (app_wrk != 0))
552 app_worker_lock_and_send_event (app_wrk, stream_session,
554 quic_ack_rx_data (stream_session);
559 svm_fifo_enqueue_with_offset (f, off - stream_data->app_rx_data_len,
567 quic_fifo_egress_shift (quicly_stream_t * stream, size_t delta)
569 session_t *stream_session;
573 stream_session = get_stream_session_from_stream (stream);
574 f = stream_session->tx_fifo;
576 rv = svm_fifo_dequeue_drop (f, delta);
577 ASSERT (rv == delta);
578 quicly_stream_sync_sendbuf (stream, 0);
582 quic_fifo_egress_emit (quicly_stream_t * stream, size_t off, void *dst,
583 size_t * len, int *wrote_all)
585 session_t *stream_session;
587 u32 deq_max, first_deq, max_rd_chunk, rem_offset;
589 stream_session = get_stream_session_from_stream (stream);
590 f = stream_session->tx_fifo;
592 QUIC_DBG (3, "Emitting %u, offset %u", *len, off);
594 deq_max = svm_fifo_max_dequeue_cons (f);
595 ASSERT (off <= deq_max);
596 if (off + *len < deq_max)
603 *len = deq_max - off;
604 QUIC_DBG (3, "Wrote ALL, %u", *len);
607 /* TODO, use something like : return svm_fifo_peek (f, off, *len, dst); */
608 max_rd_chunk = svm_fifo_max_read_chunk (f);
611 if (off < max_rd_chunk)
613 first_deq = clib_min (*len, max_rd_chunk - off);
614 clib_memcpy_fast (dst, svm_fifo_head (f) + off, first_deq);
617 if (max_rd_chunk < off + *len)
619 rem_offset = max_rd_chunk < off ? off - max_rd_chunk : 0;
620 clib_memcpy_fast (dst + first_deq, f->head_chunk->data + rem_offset,
627 static const quicly_stream_callbacks_t quic_stream_callbacks = {
628 .on_destroy = quic_on_stream_destroy,
629 .on_send_shift = quic_fifo_egress_shift,
630 .on_send_emit = quic_fifo_egress_emit,
631 .on_send_stop = quic_on_stop_sending,
632 .on_receive = quic_on_receive,
633 .on_receive_reset = quic_on_receive_reset
637 quic_accept_stream (void *s)
639 quicly_stream_t *stream = (quicly_stream_t *) s;
640 session_t *stream_session, *quic_session;
641 quic_stream_data_t *stream_data;
642 app_worker_t *app_wrk;
643 quic_ctx_t *qctx, *sctx;
647 sctx_id = quic_ctx_alloc (vlib_get_thread_index ());
649 qctx = quic_get_conn_ctx (stream->conn);
651 /* Might need to signal that the connection is ready if the first thing the
652 * server does is open a stream */
653 if (qctx->conn_state == QUIC_CONN_STATE_HANDSHAKE)
655 if (quicly_connection_is_ready (qctx->conn))
657 qctx->conn_state = QUIC_CONN_STATE_READY;
658 if (quicly_is_client (qctx->conn))
660 quic_on_client_connected (qctx);
661 /* ctx might be invalidated */
662 qctx = quic_get_conn_ctx (stream->conn);
667 stream_session = session_alloc (qctx->c_thread_index);
668 QUIC_DBG (2, "ACCEPTED stream_session 0x%lx ctx %u",
669 session_handle (stream_session), sctx_id);
670 sctx = quic_ctx_get (sctx_id, qctx->c_thread_index);
671 sctx->parent_app_wrk_id = qctx->parent_app_wrk_id;
672 sctx->parent_app_id = qctx->parent_app_id;
673 sctx->quic_connection_ctx_id = qctx->c_c_index;
674 sctx->c_c_index = sctx_id;
675 sctx->c_s_index = stream_session->session_index;
676 sctx->stream = stream;
677 sctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
678 sctx->flags |= QUIC_F_IS_STREAM;
680 stream_data = (quic_stream_data_t *) stream->data;
681 stream_data->ctx_id = sctx_id;
682 stream_data->thread_index = sctx->c_thread_index;
683 stream_data->app_rx_data_len = 0;
685 sctx->c_s_index = stream_session->session_index;
686 stream_session->session_state = SESSION_STATE_CREATED;
687 stream_session->app_wrk_index = sctx->parent_app_wrk_id;
688 stream_session->connection_index = sctx->c_c_index;
689 stream_session->session_type =
690 session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, qctx->udp_is_ip4);
691 quic_session = session_get (qctx->c_s_index, qctx->c_thread_index);
692 stream_session->listener_handle = listen_session_get_handle (quic_session);
694 app_wrk = app_worker_get (stream_session->app_wrk_index);
695 if ((rv = app_worker_init_connected (app_wrk, stream_session)))
697 QUIC_DBG (1, "failed to allocate fifos");
698 session_free (stream_session);
699 quicly_reset_stream (stream, QUIC_APP_ALLOCATION_ERROR);
702 svm_fifo_add_want_deq_ntf (stream_session->rx_fifo,
703 SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL |
704 SVM_FIFO_WANT_DEQ_NOTIF_IF_EMPTY);
706 if ((rv = app_worker_accept_notify (app_wrk, stream_session)))
708 QUIC_DBG (1, "failed to notify accept worker app");
709 session_free_w_fifos (stream_session);
710 quicly_reset_stream (stream, QUIC_APP_ACCEPT_NOTIFY_ERROR);
716 quic_on_stream_open (quicly_stream_open_t * self, quicly_stream_t * stream)
718 QUIC_DBG (2, "on_stream_open called");
719 stream->data = malloc (sizeof (quic_stream_data_t));
720 stream->callbacks = &quic_stream_callbacks;
721 /* Notify accept on parent qsession, but only if this is not a locally
722 * initiated stream */
723 if (!quicly_stream_is_self_initiated (stream))
724 quic_accept_stream (stream);
729 quic_on_closed_by_peer (quicly_closed_by_peer_t * self, quicly_conn_t * conn,
730 int code, uint64_t frame_type,
731 const char *reason, size_t reason_len)
733 quic_ctx_t *ctx = quic_get_conn_ctx (conn);
735 session_t *quic_session = session_get (ctx->c_s_index, ctx->c_thread_index);
736 clib_warning ("Session 0x%lx closed by peer (%U) %.*s ",
737 session_handle (quic_session), quic_format_err, code,
740 ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING;
741 session_transport_closing_notify (&ctx->connection);
744 static quicly_stream_open_t on_stream_open = { &quic_on_stream_open };
745 static quicly_closed_by_peer_t on_closed_by_peer =
746 { &quic_on_closed_by_peer };
749 /*****************************************************************************
751 * END QUICLY CALLBACKS
753 *****************************************************************************/
755 /*****************************************************************************
757 * BEGIN TIMERS HANDLING
759 *****************************************************************************/
762 quic_get_thread_time (u8 thread_index)
764 return quic_main.wrk_ctx[thread_index].time_now;
768 quic_get_time (quicly_now_t * self)
770 u8 thread_index = vlib_get_thread_index ();
771 return quic_get_thread_time (thread_index);
774 static quicly_now_t quicly_vpp_now_cb = { quic_get_time };
777 quic_set_time_now (u32 thread_index)
779 vlib_main_t *vlib_main = vlib_get_main ();
780 f64 time = vlib_time_now (vlib_main);
781 quic_main.wrk_ctx[thread_index].time_now = (int64_t) (time * 1000.f);
782 return quic_main.wrk_ctx[thread_index].time_now;
785 /* Transport proto callback */
787 quic_update_time (f64 now, u8 thread_index)
789 tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
791 tw = &quic_main.wrk_ctx[thread_index].timer_wheel;
792 quic_set_time_now (thread_index);
793 tw_timer_expire_timers_1t_3w_1024sl_ov (tw, now);
797 quic_timer_expired (u32 conn_index)
800 QUIC_DBG (4, "Timer expired for conn %u at %ld", conn_index,
801 quic_get_time (NULL));
802 ctx = quic_ctx_get (conn_index, vlib_get_thread_index ());
803 ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
804 quic_send_packets (ctx);
808 quic_update_timer (quic_ctx_t * ctx)
810 tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
811 int64_t next_timeout, next_interval;
812 session_t *quic_session;
814 /* This timeout is in ms which is the unit of our timer */
815 next_timeout = quicly_get_first_timeout (ctx->conn);
816 next_interval = next_timeout - quic_get_time (NULL);
818 if (next_timeout == 0 || next_interval <= 0)
820 if (ctx->c_s_index == QUIC_SESSION_INVALID)
826 quic_session = session_get (ctx->c_s_index, ctx->c_thread_index);
827 if (svm_fifo_set_event (quic_session->tx_fifo))
828 session_send_io_evt_to_thread_custom (quic_session,
829 quic_session->thread_index,
830 SESSION_IO_EVT_BUILTIN_TX);
835 tw = &quic_main.wrk_ctx[vlib_get_thread_index ()].timer_wheel;
837 QUIC_DBG (4, "Timer set to %ld (int %ld) for ctx %u", next_timeout,
838 next_interval, ctx->c_c_index);
840 if (ctx->timer_handle == QUIC_TIMER_HANDLE_INVALID)
842 if (next_timeout == INT64_MAX)
844 QUIC_DBG (4, "timer for ctx %u already stopped", ctx->c_c_index);
848 tw_timer_start_1t_3w_1024sl_ov (tw, ctx->c_c_index, 0, next_interval);
852 if (next_timeout == INT64_MAX)
854 tw_timer_stop_1t_3w_1024sl_ov (tw, ctx->timer_handle);
855 ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
856 QUIC_DBG (4, "Stopping timer for ctx %u", ctx->c_c_index);
859 tw_timer_update_1t_3w_1024sl_ov (tw, ctx->timer_handle,
866 quic_expired_timers_dispatch (u32 * expired_timers)
870 for (i = 0; i < vec_len (expired_timers); i++)
872 quic_timer_expired (expired_timers[i]);
876 /*****************************************************************************
878 * END TIMERS HANDLING
880 *****************************************************************************/
883 quic_encrypt_ticket_cb (ptls_encrypt_ticket_t * _self, ptls_t * tls,
884 int is_encrypt, ptls_buffer_t * dst, ptls_iovec_t src)
886 quic_session_cache_t *self = (void *) _self;
892 /* replace the cached entry along with a newly generated session id */
893 free (self->data.base);
894 if ((self->data.base = malloc (src.len)) == NULL)
895 return PTLS_ERROR_NO_MEMORY;
897 ptls_get_context (tls)->random_bytes (self->id, sizeof (self->id));
898 memcpy (self->data.base, src.base, src.len);
899 self->data.len = src.len;
901 /* store the session id in buffer */
902 if ((ret = ptls_buffer_reserve (dst, sizeof (self->id))) != 0)
904 memcpy (dst->base + dst->off, self->id, sizeof (self->id));
905 dst->off += sizeof (self->id);
911 /* check if session id is the one stored in cache */
912 if (src.len != sizeof (self->id))
913 return PTLS_ERROR_SESSION_NOT_FOUND;
914 if (memcmp (self->id, src.base, sizeof (self->id)) != 0)
915 return PTLS_ERROR_SESSION_NOT_FOUND;
917 /* return the cached value */
918 if ((ret = ptls_buffer_reserve (dst, self->data.len)) != 0)
920 memcpy (dst->base + dst->off, self->data.base, self->data.len);
921 dst->off += self->data.len;
927 typedef struct quicly_ctx_data_
929 quicly_context_t quicly_ctx;
931 ptls_context_t ptls_ctx;
935 quic_store_quicly_ctx (application_t * app, u8 is_client)
937 quic_main_t *qm = &quic_main;
938 quicly_context_t *quicly_ctx;
939 ptls_iovec_t key_vec;
943 quicly_ctx_data_t *quicly_ctx_data =
944 clib_mem_alloc (sizeof (quicly_ctx_data_t));
945 clib_memset (quicly_ctx_data, 0, sizeof (*quicly_ctx_data)); /* picotls depends on this */
946 quicly_ctx = &quicly_ctx_data->quicly_ctx;
947 ptls_context_t *ptls_ctx = &quicly_ctx_data->ptls_ctx;
948 ptls_ctx->random_bytes = ptls_openssl_random_bytes;
949 ptls_ctx->get_time = &ptls_get_time;
950 ptls_ctx->key_exchanges = ptls_openssl_key_exchanges;
951 ptls_ctx->cipher_suites = qm->quic_ciphers[qm->default_cipher];
952 ptls_ctx->certificates.list = NULL;
953 ptls_ctx->certificates.count = 0;
954 ptls_ctx->esni = NULL;
955 ptls_ctx->on_client_hello = NULL;
956 ptls_ctx->emit_certificate = NULL;
957 ptls_ctx->sign_certificate = NULL;
958 ptls_ctx->verify_certificate = NULL;
959 ptls_ctx->ticket_lifetime = 86400;
960 ptls_ctx->max_early_data_size = 8192;
961 ptls_ctx->hkdf_label_prefix__obsolete = NULL;
962 ptls_ctx->require_dhe_on_psk = 1;
963 ptls_ctx->encrypt_ticket = &qm->session_cache.super;
965 app->quicly_ctx = (u64 *) quicly_ctx;
966 memcpy (quicly_ctx, &quicly_spec_context, sizeof (quicly_context_t));
968 quicly_ctx->max_packet_size = QUIC_MAX_PACKET_SIZE;
969 quicly_ctx->tls = ptls_ctx;
970 quicly_ctx->stream_open = &on_stream_open;
971 quicly_ctx->closed_by_peer = &on_closed_by_peer;
972 quicly_ctx->now = &quicly_vpp_now_cb;
973 quicly_amend_ptls_context (quicly_ctx->tls);
975 quicly_ctx->event_log.mask = UINT64_MAX; /* logs */
976 quicly_ctx->event_log.cb = quic_new_event_logger ();
978 quicly_ctx->transport_params.max_data = QUIC_INT_MAX;
979 quicly_ctx->transport_params.max_streams_uni = (uint64_t) 1 << 60;
980 quicly_ctx->transport_params.max_streams_bidi = (uint64_t) 1 << 60;
981 quicly_ctx->transport_params.max_stream_data.bidi_local = (QUIC_FIFO_SIZE - 1); /* max_enq is SIZE - 1 */
982 quicly_ctx->transport_params.max_stream_data.bidi_remote = (QUIC_FIFO_SIZE - 1); /* max_enq is SIZE - 1 */
983 quicly_ctx->transport_params.max_stream_data.uni = QUIC_INT_MAX;
985 quicly_ctx->tls->random_bytes (quicly_ctx_data->cid_key, 16);
986 quicly_ctx_data->cid_key[16] = 0;
988 ptls_iovec_init (quicly_ctx_data->cid_key,
989 strlen (quicly_ctx_data->cid_key));
990 quicly_ctx->cid_encryptor =
991 quicly_new_default_cid_encryptor (&ptls_openssl_bfecb,
992 &ptls_openssl_sha256, key_vec);
995 if (app->tls_key != NULL && app->tls_cert != NULL)
997 if (load_bio_private_key (quicly_ctx->tls, (char *) app->tls_key))
999 QUIC_DBG (1, "failed to read private key from app configuration\n");
1001 if (load_bio_certificate_chain (quicly_ctx->tls,
1002 (char *) app->tls_cert))
1004 QUIC_DBG (1, "failed to load certificate\n");
1009 /*****************************************************************************
1011 * BEGIN TRANSPORT PROTO FUNCTIONS
1013 *****************************************************************************/
1016 quic_connect_new_stream (session_t * quic_session, u32 opaque)
1018 uint64_t quic_session_handle;
1019 session_t *stream_session;
1020 quic_stream_data_t *stream_data;
1021 quicly_stream_t *stream;
1022 quicly_conn_t *conn;
1023 app_worker_t *app_wrk;
1024 quic_ctx_t *qctx, *sctx;
1028 /* Find base session to which the user want to attach a stream */
1029 quic_session_handle = session_handle (quic_session);
1030 QUIC_DBG (2, "Opening new stream (qsession %u)", quic_session_handle);
1032 if (session_type_transport_proto (quic_session->session_type) !=
1033 TRANSPORT_PROTO_QUIC)
1035 QUIC_DBG (1, "received incompatible session");
1039 app_wrk = app_worker_get_if_valid (quic_session->app_wrk_index);
1042 QUIC_DBG (1, "Invalid app worker :(");
1046 sctx_index = quic_ctx_alloc (quic_session->thread_index); /* Allocate before we get pointers */
1047 sctx = quic_ctx_get (sctx_index, quic_session->thread_index);
1049 quic_ctx_get (quic_session->connection_index, quic_session->thread_index);
1050 if (quic_ctx_is_stream (qctx))
1052 QUIC_DBG (1, "session is a stream");
1053 quic_ctx_free (sctx);
1057 sctx->parent_app_wrk_id = qctx->parent_app_wrk_id;
1058 sctx->parent_app_id = qctx->parent_app_id;
1059 sctx->quic_connection_ctx_id = qctx->c_c_index;
1060 sctx->c_c_index = sctx_index;
1061 sctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
1062 sctx->flags |= QUIC_F_IS_STREAM;
1066 if (!conn || !quicly_connection_is_ready (conn))
1069 if ((rv = quicly_open_stream (conn, &stream, 0 /* uni */ )))
1071 QUIC_DBG (2, "Stream open failed with %d", rv);
1074 sctx->stream = stream;
1076 QUIC_DBG (2, "Opened stream %d, creating session", stream->stream_id);
1078 stream_session = session_alloc (qctx->c_thread_index);
1079 QUIC_DBG (2, "Allocated stream_session 0x%lx ctx %u",
1080 session_handle (stream_session), sctx_index);
1081 stream_session->app_wrk_index = app_wrk->wrk_index;
1082 stream_session->connection_index = sctx_index;
1083 stream_session->listener_handle = quic_session_handle;
1084 stream_session->session_type =
1085 session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, qctx->udp_is_ip4);
1087 sctx->c_s_index = stream_session->session_index;
1089 if (app_worker_init_connected (app_wrk, stream_session))
1091 QUIC_DBG (1, "failed to app_worker_init_connected");
1092 quicly_reset_stream (stream, QUIC_APP_ALLOCATION_ERROR);
1093 session_free_w_fifos (stream_session);
1094 quic_ctx_free (sctx);
1095 return app_worker_connect_notify (app_wrk, NULL, opaque);
1098 svm_fifo_add_want_deq_ntf (stream_session->rx_fifo,
1099 SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL |
1100 SVM_FIFO_WANT_DEQ_NOTIF_IF_EMPTY);
1102 stream_session->session_state = SESSION_STATE_READY;
1103 if (app_worker_connect_notify (app_wrk, stream_session, opaque))
1105 QUIC_DBG (1, "failed to notify app");
1106 quicly_reset_stream (stream, QUIC_APP_CONNECT_NOTIFY_ERROR);
1107 session_free_w_fifos (stream_session);
1108 quic_ctx_free (sctx);
1111 stream_data = (quic_stream_data_t *) stream->data;
1112 stream_data->ctx_id = sctx->c_c_index;
1113 stream_data->thread_index = sctx->c_thread_index;
1114 stream_data->app_rx_data_len = 0;
1119 quic_connect_new_connection (session_endpoint_cfg_t * sep)
1121 vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs;
1122 quic_main_t *qm = &quic_main;
1124 app_worker_t *app_wrk;
1129 ctx_index = quic_ctx_alloc (vlib_get_thread_index ());
1130 ctx = quic_ctx_get (ctx_index, vlib_get_thread_index ());
1131 ctx->parent_app_wrk_id = sep->app_wrk_index;
1132 ctx->c_s_index = QUIC_SESSION_INVALID;
1133 ctx->c_c_index = ctx_index;
1134 ctx->udp_is_ip4 = sep->is_ip4;
1135 ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
1136 ctx->conn_state = QUIC_CONN_STATE_HANDSHAKE;
1137 ctx->client_opaque = sep->opaque;
1138 ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
1140 ctx->srv_hostname = format (0, "%v", sep->hostname);
1142 /* needed by quic for crypto + determining client / server */
1144 format (0, "%U", format_ip46_address, &sep->ip, sep->is_ip4);
1145 vec_terminate_c_string (ctx->srv_hostname);
1147 clib_memcpy (&cargs->sep, sep, sizeof (session_endpoint_cfg_t));
1148 cargs->sep.transport_proto = TRANSPORT_PROTO_UDPC;
1149 cargs->app_index = qm->app_index;
1150 cargs->api_context = ctx_index;
1152 app_wrk = app_worker_get (sep->app_wrk_index);
1153 app = application_get (app_wrk->app_index);
1154 ctx->parent_app_id = app_wrk->app_index;
1155 cargs->sep_ext.ns_index = app->ns_index;
1157 quic_store_quicly_ctx (app, 1 /* is client */ );
1159 if ((error = vnet_connect (cargs)))
1166 quic_connect (transport_endpoint_cfg_t * tep)
1168 QUIC_DBG (2, "Called quic_connect");
1169 session_endpoint_cfg_t *sep = (session_endpoint_cfg_t *) tep;
1170 session_t *quic_session;
1171 sep = (session_endpoint_cfg_t *) tep;
1173 quic_session = session_get_from_handle_if_valid (sep->parent_handle);
1175 return quic_connect_new_stream (quic_session, sep->opaque);
1177 return quic_connect_new_connection (sep);
1181 quic_proto_on_close (u32 ctx_index, u32 thread_index)
1183 quic_ctx_t *ctx = quic_ctx_get_if_valid (ctx_index, thread_index);
1187 session_t *stream_session =
1188 session_get (ctx->c_s_index, ctx->c_thread_index);
1189 clib_warning ("Closing session 0x%lx", session_handle (stream_session));
1191 if (quic_ctx_is_stream (ctx))
1193 quicly_stream_t *stream = ctx->stream;
1194 quicly_reset_stream (stream, QUIC_APP_ERROR_CLOSE_NOTIFY);
1195 quic_send_packets (ctx);
1199 switch (ctx->conn_state)
1201 case QUIC_CONN_STATE_READY:
1202 ctx->conn_state = QUIC_CONN_STATE_ACTIVE_CLOSING;
1203 quicly_conn_t *conn = ctx->conn;
1204 /* Start connection closing. Keep sending packets until quicly_send
1205 returns QUICLY_ERROR_FREE_CONNECTION */
1206 quicly_close (conn, QUIC_APP_ERROR_CLOSE_NOTIFY, "Closed by peer");
1207 /* This also causes all streams to be closed (and the cb called) */
1208 quic_send_packets (ctx);
1210 case QUIC_CONN_STATE_PASSIVE_CLOSING:
1211 ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING_APP_CLOSED;
1212 /* send_packets will eventually return an error, we delete the conn at
1215 case QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED:
1216 quic_connection_delete (ctx);
1219 QUIC_DBG (0, "BUG");
1225 quic_start_listen (u32 quic_listen_session_index, transport_endpoint_t * tep)
1227 vnet_listen_args_t _bargs, *args = &_bargs;
1228 quic_main_t *qm = &quic_main;
1229 session_handle_t udp_handle;
1230 session_endpoint_cfg_t *sep;
1231 session_t *udp_listen_session;
1232 app_worker_t *app_wrk;
1236 app_listener_t *app_listener;
1238 sep = (session_endpoint_cfg_t *) tep;
1239 app_wrk = app_worker_get (sep->app_wrk_index);
1240 /* We need to call this because we call app_worker_init_connected in
1241 * quic_accept_stream, which assumes the connect segment manager exists */
1242 app_worker_alloc_connects_segment_manager (app_wrk);
1243 app = application_get (app_wrk->app_index);
1244 QUIC_DBG (2, "Called quic_start_listen for app %d", app_wrk->app_index);
1246 quic_store_quicly_ctx (app, 0 /* is_client */ );
1248 sep->transport_proto = TRANSPORT_PROTO_UDPC;
1249 memset (args, 0, sizeof (*args));
1250 args->app_index = qm->app_index;
1251 args->sep_ext = *sep;
1252 args->sep_ext.ns_index = app->ns_index;
1253 if (vnet_listen (args))
1256 lctx_index = quic_ctx_alloc (0);
1257 udp_handle = args->handle;
1258 app_listener = app_listener_get_w_handle (udp_handle);
1259 udp_listen_session = app_listener_get_session (app_listener);
1260 udp_listen_session->opaque = lctx_index;
1262 lctx = quic_ctx_get (lctx_index, 0);
1263 lctx->flags |= QUIC_F_IS_LISTENER;
1265 clib_memcpy (&lctx->c_rmt_ip, &args->sep.peer.ip, sizeof (ip46_address_t));
1266 clib_memcpy (&lctx->c_lcl_ip, &args->sep.ip, sizeof (ip46_address_t));
1267 lctx->c_rmt_port = args->sep.peer.port;
1268 lctx->c_lcl_port = args->sep.port;
1269 lctx->c_is_ip4 = args->sep.is_ip4;
1270 lctx->c_fib_index = args->sep.fib_index;
1271 lctx->c_proto = TRANSPORT_PROTO_QUIC;
1272 lctx->parent_app_wrk_id = sep->app_wrk_index;
1273 lctx->parent_app_id = app_wrk->app_index;
1274 lctx->udp_session_handle = udp_handle;
1275 lctx->c_s_index = quic_listen_session_index;
1277 QUIC_DBG (2, "Listening UDP session 0x%lx",
1278 session_handle (udp_listen_session));
1279 QUIC_DBG (2, "Listening QUIC session 0x%lx", quic_listen_session_index);
1284 quic_stop_listen (u32 lctx_index)
1286 QUIC_DBG (2, "Called quic_stop_listen");
1288 lctx = quic_ctx_get (lctx_index, 0);
1289 ASSERT (quic_ctx_is_listener (lctx));
1290 vnet_unlisten_args_t a = {
1291 .handle = lctx->udp_session_handle,
1292 .app_index = quic_main.app_index,
1293 .wrk_map_index = 0 /* default wrk */
1295 if (vnet_unlisten (&a))
1296 clib_warning ("unlisten errored");
1298 /* TODO: crypto state cleanup */
1300 quic_ctx_free (lctx);
1304 static transport_connection_t *
1305 quic_connection_get (u32 ctx_index, u32 thread_index)
1308 ctx = quic_ctx_get (ctx_index, thread_index);
1309 return &ctx->connection;
1312 static transport_connection_t *
1313 quic_listener_get (u32 listener_index)
1315 QUIC_DBG (2, "Called quic_listener_get");
1317 ctx = quic_ctx_get (listener_index, 0);
1318 return &ctx->connection;
1322 format_quic_ctx (u8 * s, va_list * args)
1324 quic_ctx_t *ctx = va_arg (*args, quic_ctx_t *);
1325 u32 verbose = va_arg (*args, u32);
1330 str = format (str, "[#%d][Q] ", ctx->c_thread_index);
1332 if (quic_ctx_is_listener (ctx))
1333 str = format (str, "Listener, UDP %ld", ctx->udp_session_handle);
1334 else if (quic_ctx_is_stream (ctx))
1335 str = format (str, "Stream %ld conn %d",
1336 ctx->stream->stream_id, ctx->quic_connection_ctx_id);
1337 else /* connection */
1338 str = format (str, "Conn %d UDP %d", ctx->c_c_index,
1339 ctx->udp_session_handle);
1341 str = format (str, " app %d wrk %d", ctx->parent_app_id,
1342 ctx->parent_app_wrk_id);
1345 s = format (s, "%-50s%-15d", str, ctx->conn_state);
1347 s = format (s, "%s\n", str);
1353 format_quic_connection (u8 * s, va_list * args)
1355 u32 qc_index = va_arg (*args, u32);
1356 u32 thread_index = va_arg (*args, u32);
1357 u32 verbose = va_arg (*args, u32);
1358 quic_ctx_t *ctx = quic_ctx_get (qc_index, thread_index);
1359 s = format (s, "%U", format_quic_ctx, ctx, verbose);
1364 format_quic_half_open (u8 * s, va_list * args)
1366 u32 qc_index = va_arg (*args, u32);
1367 u32 thread_index = va_arg (*args, u32);
1368 quic_ctx_t *ctx = quic_ctx_get (qc_index, thread_index);
1370 format (s, "[#%d][Q] half-open app %u", thread_index, ctx->parent_app_id);
1376 format_quic_listener (u8 * s, va_list * args)
1378 u32 tci = va_arg (*args, u32);
1379 u32 thread_index = va_arg (*args, u32);
1380 u32 verbose = va_arg (*args, u32);
1381 quic_ctx_t *ctx = quic_ctx_get (tci, thread_index);
1382 s = format (s, "%U", format_quic_ctx, ctx, verbose);
1386 /*****************************************************************************
1387 * END TRANSPORT PROTO FUNCTIONS
1389 * START SESSION CALLBACKS
1390 * Called from UDP layer
1391 *****************************************************************************/
1394 quic_build_sockaddr (struct sockaddr *sa, socklen_t * salen,
1395 ip46_address_t * addr, u16 port, u8 is_ip4)
1399 struct sockaddr_in *sa4 = (struct sockaddr_in *) sa;
1400 sa4->sin_family = AF_INET;
1401 sa4->sin_port = port;
1402 sa4->sin_addr.s_addr = addr->ip4.as_u32;
1403 *salen = sizeof (struct sockaddr_in);
1407 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) sa;
1408 sa6->sin6_family = AF_INET6;
1409 sa6->sin6_port = port;
1410 clib_memcpy (&sa6->sin6_addr, &addr->ip6, 16);
1411 *salen = sizeof (struct sockaddr_in6);
1416 quic_on_client_connected (quic_ctx_t * ctx)
1418 session_t *quic_session;
1419 app_worker_t *app_wrk;
1420 u32 ctx_id = ctx->c_c_index;
1421 u32 thread_index = ctx->c_thread_index;
1424 app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_id);
1427 quic_disconnect_transport (ctx);
1431 quic_session = session_alloc (thread_index);
1433 QUIC_DBG (2, "Allocated quic session 0x%lx", session_handle (quic_session));
1434 ctx->c_s_index = quic_session->session_index;
1435 quic_session->app_wrk_index = ctx->parent_app_wrk_id;
1436 quic_session->connection_index = ctx->c_c_index;
1437 quic_session->listener_handle = SESSION_INVALID_HANDLE;
1438 quic_session->session_type =
1439 session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, ctx->udp_is_ip4);
1441 if (app_worker_init_connected (app_wrk, quic_session))
1443 QUIC_DBG (1, "failed to app_worker_init_connected");
1444 quic_proto_on_close (ctx_id, thread_index);
1445 return app_worker_connect_notify (app_wrk, NULL, ctx->client_opaque);
1448 quic_session->session_state = SESSION_STATE_CONNECTING;
1449 if ((rv = app_worker_connect_notify (app_wrk, quic_session,
1450 ctx->client_opaque)))
1452 QUIC_DBG (1, "failed to notify app %d", rv);
1453 quic_proto_on_close (ctx_id, thread_index);
1457 /* If the app opens a stream in its callback it may invalidate ctx */
1458 ctx = quic_ctx_get (ctx_id, thread_index);
1460 * app_worker_connect_notify() might have reallocated pool, reload
1461 * quic_session pointer
1463 quic_session = session_get (ctx->c_s_index, thread_index);
1464 quic_session->session_state = SESSION_STATE_LISTENING;
1470 quic_receive_connection (void *arg)
1472 u32 new_ctx_id, thread_index = vlib_get_thread_index ();
1473 quic_ctx_t *temp_ctx, *new_ctx;
1474 clib_bihash_kv_16_8_t kv;
1475 quicly_conn_t *conn;
1476 session_t *udp_session;
1479 new_ctx_id = quic_ctx_alloc (thread_index);
1480 new_ctx = quic_ctx_get (new_ctx_id, thread_index);
1482 QUIC_DBG (2, "Received conn %u (now %u)", temp_ctx->c_thread_index,
1486 memcpy (new_ctx, temp_ctx, sizeof (quic_ctx_t));
1487 clib_mem_free (temp_ctx);
1489 new_ctx->c_thread_index = thread_index;
1490 new_ctx->c_c_index = new_ctx_id;
1492 conn = new_ctx->conn;
1493 quic_store_conn_ctx (conn, new_ctx);
1494 quic_make_connection_key (&kv, quicly_get_master_id (conn));
1495 kv.value = ((u64) thread_index) << 32 | (u64) new_ctx_id;
1496 QUIC_DBG (2, "Registering conn with id %lu %lu", kv.key[0], kv.key[1]);
1497 clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 1 /* is_add */ );
1498 new_ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
1499 quic_update_timer (new_ctx);
1501 /* Trigger write on this connection if necessary */
1502 udp_session = session_get_from_handle (new_ctx->udp_session_handle);
1503 if (svm_fifo_max_dequeue (udp_session->tx_fifo))
1504 if (session_send_io_evt_to_thread (udp_session->tx_fifo,
1506 QUIC_DBG (4, "Cannot send TX event");
1510 quic_transfer_connection (u32 ctx_index, u32 dest_thread)
1512 tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
1513 quic_ctx_t *ctx, *temp_ctx;
1514 u32 thread_index = vlib_get_thread_index ();
1516 QUIC_DBG (2, "Transferring conn %u to thread %u", ctx_index, dest_thread);
1518 temp_ctx = clib_mem_alloc (sizeof (quic_ctx_t));
1520 ctx = quic_ctx_get (ctx_index, thread_index);
1522 memcpy (temp_ctx, ctx, sizeof (quic_ctx_t));
1524 /* Remove from timer wheel and thread-local pool */
1525 if (ctx->timer_handle != QUIC_TIMER_HANDLE_INVALID)
1527 tw = &quic_main.wrk_ctx[thread_index].timer_wheel;
1528 tw_timer_stop_1t_3w_1024sl_ov (tw, ctx->timer_handle);
1530 quic_ctx_free (ctx);
1532 /* Send connection to destination thread */
1533 session_send_rpc_evt_to_thread (dest_thread, quic_receive_connection,
1538 quic_session_connected_callback (u32 quic_app_index, u32 ctx_index,
1539 session_t * udp_session, u8 is_fail)
1541 QUIC_DBG (2, "QSession is now connected (id %u)",
1542 udp_session->session_index);
1543 /* This should always be called before quic_connect returns since UDP always
1544 * connects instantly. */
1545 clib_bihash_kv_16_8_t kv;
1546 struct sockaddr_in6 sa6;
1547 struct sockaddr *sa = (struct sockaddr *) &sa6;
1549 transport_connection_t *tc;
1550 app_worker_t *app_wrk;
1551 quicly_conn_t *conn;
1553 u32 thread_index = vlib_get_thread_index ();
1555 quicly_context_t *quicly_ctx;
1558 ctx = quic_ctx_get (ctx_index, thread_index);
1562 app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_id);
1565 api_context = ctx->c_s_index;
1566 app_worker_connect_notify (app_wrk, 0, api_context);
1571 ctx->c_thread_index = thread_index;
1572 ctx->c_c_index = ctx_index;
1574 QUIC_DBG (2, "Quic connect returned %u. New ctx [%u]%x",
1575 is_fail, thread_index, (ctx) ? ctx_index : ~0);
1577 ctx->udp_session_handle = session_handle (udp_session);
1578 udp_session->opaque = ctx->parent_app_id;
1580 /* Init QUIC lib connection
1581 * Generate required sockaddr & salen */
1582 tc = session_get_transport (udp_session);
1583 quic_build_sockaddr (sa, &salen, &tc->rmt_ip, tc->rmt_port, tc->is_ip4);
1585 quicly_ctx = quic_get_quicly_ctx_from_ctx (ctx);
1586 ret = quicly_connect (&ctx->conn, quicly_ctx, (char *) ctx->srv_hostname,
1587 sa, salen, &quic_main.next_cid,
1588 &quic_main.hs_properties, NULL);
1589 ++quic_main.next_cid.master_id;
1590 /* Save context handle in quicly connection */
1591 quic_store_conn_ctx (ctx->conn, ctx);
1594 /* Register connection in connections map */
1596 quic_make_connection_key (&kv, quicly_get_master_id (conn));
1597 kv.value = ((u64) thread_index) << 32 | (u64) ctx_index;
1598 QUIC_DBG (2, "Registering conn with id %lu %lu", kv.key[0], kv.key[1]);
1599 clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 1 /* is_add */ );
1601 /* UDP stack quirk? preemptively transfer connection if that happens */
1602 if (udp_session->thread_index != thread_index)
1603 quic_transfer_connection (ctx_index, udp_session->thread_index);
1605 quic_send_packets (ctx);
1611 quic_session_disconnect_callback (session_t * s)
1613 clib_warning ("UDP session disconnected???");
1617 quic_session_reset_callback (session_t * s)
1619 clib_warning ("UDP session reset???");
1623 quic_session_migrate_callback (session_t * s, session_handle_t new_sh)
1626 * TODO we need better way to get the connection from the session
1627 * This will become possible once we stop storing the app id in the UDP
1630 u32 thread_index = vlib_get_thread_index ();
1631 u64 old_session_handle = session_handle (s);
1632 u32 new_thread = session_thread_from_handle (new_sh);
1635 QUIC_DBG (1, "Session %x migrated to %lx", s->session_index, new_sh);
1637 pool_foreach (ctx, quic_main.ctx_pool[thread_index],
1639 if (ctx->udp_session_handle == old_session_handle)
1641 /* Right ctx found, move associated conn */
1642 QUIC_DBG (5, "Found right ctx: %x", ctx->c_c_index);
1643 ctx->udp_session_handle = new_sh;
1644 quic_transfer_connection (ctx->c_c_index, new_thread);
1649 QUIC_DBG (0, "BUG: Connection to migrate not found");
1653 quic_session_accepted_callback (session_t * udp_session)
1655 /* New UDP connection, try to accept it */
1658 quic_ctx_t *ctx, *lctx;
1659 session_t *udp_listen_session;
1660 u32 thread_index = vlib_get_thread_index ();
1662 udp_listen_session =
1663 listen_session_get_from_handle (udp_session->listener_handle);
1665 ctx_index = quic_ctx_alloc (thread_index);
1666 ctx = quic_ctx_get (ctx_index, thread_index);
1667 ctx->c_thread_index = udp_session->thread_index;
1668 ctx->c_c_index = ctx_index;
1669 ctx->c_s_index = QUIC_SESSION_INVALID;
1670 ctx->udp_session_handle = session_handle (udp_session);
1671 QUIC_DBG (2, "ACCEPTED UDP 0x%lx", ctx->udp_session_handle);
1672 ctx->listener_ctx_id = udp_listen_session->opaque;
1673 lctx = quic_ctx_get (udp_listen_session->opaque,
1674 udp_listen_session->thread_index);
1675 ctx->udp_is_ip4 = lctx->c_is_ip4;
1676 ctx->parent_app_id = lctx->parent_app_id;
1677 ctx->parent_app_wrk_id = lctx->parent_app_wrk_id;
1678 ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
1679 ctx->conn_state = QUIC_CONN_STATE_OPENED;
1680 ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
1682 udp_session->opaque = ctx->parent_app_id;
1684 /* Put this ctx in the "opening" pool */
1685 pool_get (quic_main.wrk_ctx[ctx->c_thread_index].opening_ctx_pool,
1687 *pool_index = ctx_index;
1689 /* TODO timeout to delete these if they never connect */
1694 quic_add_segment_callback (u32 client_index, u64 seg_handle)
1696 QUIC_DBG (2, "Called quic_add_segment_callback");
1697 QUIC_DBG (2, "NOT IMPLEMENTED");
1698 /* No-op for builtin */
1703 quic_del_segment_callback (u32 client_index, u64 seg_handle)
1705 QUIC_DBG (2, "Called quic_del_segment_callback");
1706 QUIC_DBG (2, "NOT IMPLEMENTED");
1707 /* No-op for builtin */
1712 quic_custom_app_rx_callback (transport_connection_t * tc)
1715 session_t *stream_session = session_get (tc->s_index, tc->thread_index);
1716 QUIC_DBG (3, "Received app READ notification");
1717 quic_ack_rx_data (stream_session);
1718 svm_fifo_reset_has_deq_ntf (stream_session->rx_fifo);
1720 /* Need to send packets (acks may never be sent otherwise) */
1721 ctx = quic_ctx_get (stream_session->connection_index,
1722 stream_session->thread_index);
1723 quic_send_packets (ctx);
1728 quic_custom_tx_callback (void *s, u32 max_burst_size)
1730 session_t *stream_session = (session_t *) s;
1731 quicly_stream_t *stream;
1736 (stream_session->session_state >= SESSION_STATE_TRANSPORT_CLOSING))
1739 quic_ctx_get (stream_session->connection_index,
1740 stream_session->thread_index);
1741 if (PREDICT_FALSE (!quic_ctx_is_stream (ctx)))
1743 goto tx_end; /* Most probably a reschedule */
1746 QUIC_DBG (3, "Stream TX event");
1747 quic_ack_rx_data (stream_session);
1748 if (!svm_fifo_max_dequeue (stream_session->tx_fifo))
1751 stream = ctx->stream;
1752 if (!quicly_sendstate_is_open (&stream->sendstate))
1754 QUIC_DBG (1, "Warning: tried to send on closed stream");
1758 if ((rv = quicly_stream_sync_sendbuf (stream, 1)) != 0)
1762 quic_send_packets (ctx);
1768 * Returns 0 if a matching connection is found and is on the right thread.
1769 * Otherwise returns -1.
1770 * If a connection is found, even on the wrong thread, ctx_thread and ctx_index
1774 quic_find_packet_ctx (u32 * ctx_thread, u32 * ctx_index,
1775 struct sockaddr *sa, socklen_t salen,
1776 quicly_decoded_packet_t * packet,
1777 u32 caller_thread_index)
1780 quicly_conn_t *conn_;
1781 clib_bihash_kv_16_8_t kv;
1782 clib_bihash_16_8_t *h;
1784 h = &quic_main.connection_hash;
1785 quic_make_connection_key (&kv, &packet->cid.dest.plaintext);
1786 QUIC_DBG (3, "Searching conn with id %lu %lu", kv.key[0], kv.key[1]);
1788 if (clib_bihash_search_16_8 (h, &kv, &kv) == 0)
1790 u32 index = kv.value & UINT32_MAX;
1791 u32 thread_id = kv.value >> 32;
1792 /* Check if this connection belongs to this thread, otherwise
1793 * ask for it to be moved */
1794 if (thread_id != caller_thread_index)
1796 QUIC_DBG (2, "Connection is on wrong thread");
1797 /* Cannot make full check with quicly_is_destination... */
1799 *ctx_thread = thread_id;
1802 ctx_ = quic_ctx_get (index, vlib_get_thread_index ());
1804 if (conn_ && quicly_is_destination (conn_, sa, salen, packet))
1806 QUIC_DBG (3, "Connection found");
1808 *ctx_thread = thread_id;
1812 QUIC_DBG (3, "connection not found");
1817 quic_create_quic_session (quic_ctx_t * ctx)
1819 session_t *quic_session;
1820 app_worker_t *app_wrk;
1824 quic_session = session_alloc (ctx->c_thread_index);
1825 QUIC_DBG (2, "Allocated quic_session, 0x%lx ctx %u",
1826 session_handle (quic_session), ctx->c_c_index);
1827 quic_session->session_state = SESSION_STATE_LISTENING;
1828 ctx->c_s_index = quic_session->session_index;
1830 lctx = quic_ctx_get (ctx->listener_ctx_id, 0);
1832 quic_session->app_wrk_index = lctx->parent_app_wrk_id;
1833 quic_session->connection_index = ctx->c_c_index;
1834 quic_session->session_type =
1835 session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, ctx->udp_is_ip4);
1836 quic_session->listener_handle = lctx->c_s_index;
1838 /* TODO: don't alloc fifos when we don't transfer data on this session
1839 * but we still need fifos for the events? */
1840 if ((rv = app_worker_init_accepted (quic_session)))
1842 QUIC_DBG (1, "failed to allocate fifos");
1843 session_free (quic_session);
1846 app_wrk = app_worker_get (quic_session->app_wrk_index);
1847 if ((rv = app_worker_accept_notify (app_wrk, quic_session)))
1849 QUIC_DBG (1, "failed to notify accept worker app");
1856 quic_create_connection (u32 ctx_index, struct sockaddr *sa,
1857 socklen_t salen, quicly_decoded_packet_t packet)
1859 clib_bihash_kv_16_8_t kv;
1861 quicly_conn_t *conn;
1862 u32 thread_index = vlib_get_thread_index ();
1863 quicly_context_t *quicly_ctx;
1866 /* new connection, accept and create context if packet is valid
1867 * TODO: check if socket is actually listening? */
1868 ctx = quic_ctx_get (ctx_index, thread_index);
1869 quicly_ctx = quic_get_quicly_ctx_from_ctx (ctx);
1870 if ((rv = quicly_accept (&conn, quicly_ctx, sa, salen,
1871 &packet, ptls_iovec_init (NULL, 0),
1872 &quic_main.next_cid, NULL)))
1874 /* Invalid packet, pass */
1875 assert (conn == NULL);
1876 QUIC_DBG (1, "Accept failed with %d", rv);
1877 /* TODO: cleanup created quic ctx and UDP session */
1880 assert (conn != NULL);
1882 ++quic_main.next_cid.master_id;
1883 /* Save ctx handle in quicly connection */
1884 quic_store_conn_ctx (conn, ctx);
1886 ctx->conn_state = QUIC_CONN_STATE_HANDSHAKE;
1888 quic_create_quic_session (ctx);
1890 /* Register connection in connections map */
1891 quic_make_connection_key (&kv, quicly_get_master_id (conn));
1892 kv.value = ((u64) thread_index) << 32 | (u64) ctx_index;
1893 clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 1 /* is_add */ );
1894 QUIC_DBG (2, "Registering conn with id %lu %lu", kv.key[0], kv.key[1]);
1896 return quic_send_packets (ctx);
1900 quic_reset_connection (u64 udp_session_handle,
1901 struct sockaddr *sa, socklen_t salen,
1902 quicly_decoded_packet_t packet)
1904 /* short header packet; potentially a dead connection. No need to check the
1905 * length of the incoming packet, because loop is prevented by authenticating
1906 * the CID (by checking node_id and thread_id). If the peer is also sending a
1907 * reset, then the next CID is highly likely to contain a non-authenticating
1909 QUIC_DBG (2, "Sending stateless reset");
1911 quicly_datagram_t *dgram;
1912 session_t *udp_session;
1913 quicly_context_t *quicly_ctx;
1914 if (packet.cid.dest.plaintext.node_id != 0
1915 || packet.cid.dest.plaintext.thread_id != 0)
1917 quicly_ctx = quic_get_quicly_ctx_from_udp (udp_session_handle);
1918 dgram = quicly_send_stateless_reset (quicly_ctx, sa, salen,
1919 &packet.cid.dest.plaintext);
1922 udp_session = session_get_from_handle (udp_session_handle);
1923 rv = quic_send_datagram (udp_session, dgram);
1924 if (svm_fifo_set_event (udp_session->tx_fifo))
1925 session_send_io_evt_to_thread (udp_session->tx_fifo, SESSION_IO_EVT_TX);
1929 typedef struct quic_rx_packet_ctx_
1931 quicly_decoded_packet_t packet;
1932 u8 data[QUIC_MAX_PACKET_SIZE];
1935 } quic_rx_packet_ctx_t;
1938 check_quic_client_connected (struct quic_rx_packet_ctx_ *quic_rx_ctx)
1940 /* ctx pointer may change if a new stream is opened */
1941 quic_ctx_t *ctx = quic_ctx_get (quic_rx_ctx->ctx_index,
1942 quic_rx_ctx->thread_index);
1943 /* Conn may be set to null if the connection is terminated */
1944 if (ctx->conn && ctx->conn_state == QUIC_CONN_STATE_HANDSHAKE)
1946 if (quicly_connection_is_ready (ctx->conn))
1948 ctx->conn_state = QUIC_CONN_STATE_READY;
1949 if (quicly_is_client (ctx->conn))
1951 quic_on_client_connected (ctx);
1959 quic_process_one_rx_packet (u64 udp_session_handle,
1960 quicly_context_t * quicly_ctx, svm_fifo_t * f,
1961 u32 * fifo_offset, u32 * max_packet, u32 packet_n,
1962 quic_rx_packet_ctx_t * packet_ctx)
1964 session_dgram_hdr_t ph;
1965 quic_ctx_t *ctx = NULL;
1967 struct sockaddr_in6 sa6;
1968 struct sockaddr *sa = (struct sockaddr *) &sa6;
1972 packet_ctx->thread_index = UINT32_MAX;
1973 packet_ctx->ctx_index = UINT32_MAX;
1974 u32 thread_index = vlib_get_thread_index ();
1975 u32 *opening_ctx_pool, *ctx_index_ptr;
1976 u32 cur_deq = svm_fifo_max_dequeue (f) - *fifo_offset;
1980 *max_packet = packet_n + 1;
1984 if (cur_deq < SESSION_CONN_HDR_LEN)
1986 QUIC_DBG (1, "Not enough data for even a header in RX");
1989 ret = svm_fifo_peek (f, *fifo_offset, SESSION_CONN_HDR_LEN, (u8 *) & ph);
1990 if (ret != SESSION_CONN_HDR_LEN)
1992 QUIC_DBG (1, "Not enough data for header in RX");
1995 ASSERT (ph.data_offset == 0);
1996 full_len = ph.data_length + SESSION_CONN_HDR_LEN;
1997 if (full_len > cur_deq)
1999 QUIC_DBG (1, "Not enough data in fifo RX");
2003 /* Quicly can read len bytes from the fifo at offset:
2004 * ph.data_offset + SESSION_CONN_HDR_LEN */
2006 svm_fifo_peek (f, SESSION_CONN_HDR_LEN + *fifo_offset, ph.data_length,
2008 if (ret != ph.data_length)
2010 QUIC_DBG (1, "Not enough data peeked in RX");
2014 quic_increment_counter (QUIC_ERROR_RX_PACKETS, 1);
2016 quic_build_sockaddr (sa, &salen, &ph.rmt_ip, ph.rmt_port, ph.is_ip4);
2017 quicly_ctx = quic_get_quicly_ctx_from_udp (udp_session_handle);
2019 quicly_decode_packet (quicly_ctx, &packet_ctx->packet, packet_ctx->data,
2022 if (plen == SIZE_MAX)
2024 *fifo_offset += SESSION_CONN_HDR_LEN + ph.data_length;
2029 quic_find_packet_ctx (&packet_ctx->thread_index, &packet_ctx->ctx_index,
2030 sa, salen, &packet_ctx->packet, thread_index);
2033 ctx = quic_ctx_get (packet_ctx->ctx_index, thread_index);
2034 rv = quicly_receive (ctx->conn, &packet_ctx->packet);
2036 QUIC_DBG (1, "quicly_receive return error %d", rv);
2038 else if (packet_ctx->ctx_index != UINT32_MAX)
2040 /* Connection found but on wrong thread, ask move */
2041 *max_packet = packet_n + 1;
2044 else if ((packet_ctx->packet.octets.base[0] & QUICLY_PACKET_TYPE_BITMASK) ==
2045 QUICLY_PACKET_TYPE_INITIAL)
2047 /* Try to find matching "opening" ctx */
2048 opening_ctx_pool = quic_main.wrk_ctx[thread_index].opening_ctx_pool;
2051 pool_foreach (ctx_index_ptr, opening_ctx_pool,
2053 ctx = quic_ctx_get (*ctx_index_ptr, thread_index);
2054 if (ctx->udp_session_handle == udp_session_handle)
2056 /* Right ctx found, create conn & remove from pool */
2057 quic_create_connection(*ctx_index_ptr, sa, salen, packet_ctx->packet);
2058 *max_packet = packet_n + 1;
2059 packet_ctx->thread_index = thread_index;
2060 packet_ctx->ctx_index = *ctx_index_ptr;
2061 pool_put (opening_ctx_pool, ctx_index_ptr);
2069 quic_reset_connection (udp_session_handle, sa, salen,
2070 packet_ctx->packet);
2074 *fifo_offset += SESSION_CONN_HDR_LEN + ph.data_length;
2079 quic_app_rx_callback (session_t * udp_session)
2081 /* Read data from UDP rx_fifo and pass it to the quicly conn. */
2083 quic_ctx_t *ctx = NULL;
2086 u32 app_index = udp_session->opaque;
2087 u64 udp_session_handle = session_handle (udp_session);
2089 app = application_get_if_valid (app_index);
2090 u32 thread_index = vlib_get_thread_index ();
2091 quic_rx_packet_ctx_t packets_ctx[16];
2095 QUIC_DBG (1, "Got RX on detached app");
2096 /* TODO: close this session, cleanup state? */
2102 udp_session = session_get_from_handle (udp_session_handle); /* session alloc might have happened */
2103 f = udp_session->rx_fifo;
2104 max_deq = svm_fifo_max_dequeue (f);
2110 u32 fifo_offset = 0;
2111 u32 max_packets = 16;
2112 for (int i = 0; i < max_packets; i++)
2114 quic_process_one_rx_packet (udp_session_handle,
2115 (quicly_context_t *) app->quicly_ctx, f,
2116 &fifo_offset, &max_packets, i,
2120 for (int i = 0; i < max_packets; i++)
2122 if (packets_ctx[i].thread_index != thread_index)
2125 check_quic_client_connected (&packets_ctx[i]);
2127 quic_ctx_get (packets_ctx[i].ctx_index,
2128 packets_ctx[i].thread_index);
2129 quic_send_packets (ctx);
2131 svm_fifo_dequeue_drop (f, fifo_offset);
2138 quic_common_get_transport_endpoint (quic_ctx_t * ctx,
2139 transport_endpoint_t * tep, u8 is_lcl)
2141 session_t *udp_session;
2142 if (!quic_ctx_is_stream (ctx))
2144 udp_session = session_get_from_handle (ctx->udp_session_handle);
2145 session_get_endpoint (udp_session, tep, is_lcl);
2150 quic_get_transport_listener_endpoint (u32 listener_index,
2151 transport_endpoint_t * tep, u8 is_lcl)
2154 app_listener_t *app_listener;
2155 session_t *udp_listen_session;
2156 ctx = quic_ctx_get (listener_index, vlib_get_thread_index ());
2157 if (quic_ctx_is_listener (ctx))
2159 app_listener = app_listener_get_w_handle (ctx->udp_session_handle);
2160 udp_listen_session = app_listener_get_session (app_listener);
2161 return session_get_endpoint (udp_listen_session, tep, is_lcl);
2163 quic_common_get_transport_endpoint (ctx, tep, is_lcl);
2167 quic_get_transport_endpoint (u32 ctx_index, u32 thread_index,
2168 transport_endpoint_t * tep, u8 is_lcl)
2171 ctx = quic_ctx_get (ctx_index, thread_index);
2172 quic_common_get_transport_endpoint (ctx, tep, is_lcl);
2175 /*****************************************************************************
2176 * END TRANSPORT PROTO FUNCTIONS
2177 *****************************************************************************/
2180 static session_cb_vft_t quic_app_cb_vft = {
2181 .session_accept_callback = quic_session_accepted_callback,
2182 .session_disconnect_callback = quic_session_disconnect_callback,
2183 .session_connected_callback = quic_session_connected_callback,
2184 .session_reset_callback = quic_session_reset_callback,
2185 .session_migrate_callback = quic_session_migrate_callback,
2186 .add_segment_callback = quic_add_segment_callback,
2187 .del_segment_callback = quic_del_segment_callback,
2188 .builtin_app_rx_callback = quic_app_rx_callback,
2191 static const transport_proto_vft_t quic_proto = {
2192 .connect = quic_connect,
2193 .close = quic_proto_on_close,
2194 .start_listen = quic_start_listen,
2195 .stop_listen = quic_stop_listen,
2196 .get_connection = quic_connection_get,
2197 .get_listener = quic_listener_get,
2198 .update_time = quic_update_time,
2199 .app_rx_evt = quic_custom_app_rx_callback,
2200 .custom_tx = quic_custom_tx_callback,
2201 .format_connection = format_quic_connection,
2202 .format_half_open = format_quic_half_open,
2203 .format_listener = format_quic_listener,
2204 .get_transport_endpoint = quic_get_transport_endpoint,
2205 .get_transport_listener_endpoint = quic_get_transport_listener_endpoint,
2206 .transport_options = {
2207 .tx_type = TRANSPORT_TX_INTERNAL,
2208 .service_type = TRANSPORT_SERVICE_APP,
2214 quic_register_cipher_suite (quic_crypto_engine_t type,
2215 ptls_cipher_suite_t ** ciphers)
2217 quic_main_t *qm = &quic_main;
2218 vec_validate (qm->quic_ciphers, type);
2219 qm->quic_ciphers[type] = ciphers;
2222 static clib_error_t *
2223 quic_init (vlib_main_t * vm)
2225 u32 segment_size = 256 << 20;
2226 vlib_thread_main_t *vtm = vlib_get_thread_main ();
2227 tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
2228 vnet_app_attach_args_t _a, *a = &_a;
2229 u64 options[APP_OPTIONS_N_OPTIONS];
2230 quic_main_t *qm = &quic_main;
2231 u32 fifo_size = QUIC_FIFO_SIZE;
2234 num_threads = 1 /* main thread */ + vtm->n_threads;
2236 memset (a, 0, sizeof (*a));
2237 memset (options, 0, sizeof (options));
2239 a->session_cb_vft = &quic_app_cb_vft;
2240 a->api_client_index = APP_INVALID_INDEX;
2241 a->options = options;
2242 a->name = format (0, "quic");
2243 a->options[APP_OPTIONS_SEGMENT_SIZE] = segment_size;
2244 a->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = segment_size;
2245 a->options[APP_OPTIONS_RX_FIFO_SIZE] = fifo_size;
2246 a->options[APP_OPTIONS_TX_FIFO_SIZE] = fifo_size;
2247 a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN;
2248 a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE;
2249 a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_IS_TRANSPORT_APP;
2251 if (vnet_application_attach (a))
2253 clib_warning ("failed to attach quic app");
2254 return clib_error_return (0, "failed to attach quic app");
2257 vec_validate (qm->ctx_pool, num_threads - 1);
2258 vec_validate (qm->wrk_ctx, num_threads - 1);
2259 /* Timer wheels, one per thread. */
2260 for (i = 0; i < num_threads; i++)
2262 tw = &qm->wrk_ctx[i].timer_wheel;
2263 tw_timer_wheel_init_1t_3w_1024sl_ov (tw, quic_expired_timers_dispatch,
2264 1e-3 /* timer period 1ms */ , ~0);
2265 tw->last_run_time = vlib_time_now (vlib_get_main ());
2268 clib_bihash_init_16_8 (&qm->connection_hash, "quic connections", 1024,
2272 qm->app_index = a->app_index;
2273 qm->tstamp_ticks_per_clock = vm->clib_time.seconds_per_clock
2274 / QUIC_TSTAMP_RESOLUTION;
2275 qm->session_cache.super.cb = quic_encrypt_ticket_cb;
2277 transport_register_protocol (TRANSPORT_PROTO_QUIC, &quic_proto,
2278 FIB_PROTOCOL_IP4, ~0);
2279 transport_register_protocol (TRANSPORT_PROTO_QUIC, &quic_proto,
2280 FIB_PROTOCOL_IP6, ~0);
2282 quic_register_cipher_suite (CRYPTO_ENGINE_VPP, quic_crypto_cipher_suites);
2283 quic_register_cipher_suite (CRYPTO_ENGINE_PICOTLS,
2284 ptls_openssl_cipher_suites);
2285 qm->default_cipher = CRYPTO_ENGINE_PICOTLS;
2290 VLIB_INIT_FUNCTION (quic_init);
2292 static clib_error_t *
2293 quic_plugin_crypto_command_fn (vlib_main_t * vm,
2294 unformat_input_t * input,
2295 vlib_cli_command_t * cmd)
2297 quic_main_t *qm = &quic_main;
2298 if (unformat_check_input (input) == UNFORMAT_END_OF_INPUT)
2299 return clib_error_return (0, "unknown input '%U'",
2300 format_unformat_error, input);
2301 if (unformat (input, "vpp"))
2302 qm->default_cipher = CRYPTO_ENGINE_VPP;
2303 else if (unformat (input, "picotls"))
2304 qm->default_cipher = CRYPTO_ENGINE_PICOTLS;
2306 return clib_error_return (0, "unknown input '%U'",
2307 format_unformat_error, input);
2312 quic_format_ctx_stat (u8 * s, va_list * args)
2314 quic_ctx_t *ctx = va_arg (*args, quic_ctx_t *);
2315 quicly_stats_t quicly_stats;
2317 quicly_get_stats (ctx->conn, &quicly_stats);
2319 s = format (s, "\n\rQUIC conn stats \n\r");
2322 format (s, "RTT: min:%d, smoothed:%d, variance:%d, latest:%d \n\r",
2323 quicly_stats.rtt.minimum, quicly_stats.rtt.smoothed,
2324 quicly_stats.rtt.variance, quicly_stats.rtt.latest);
2325 s = format (s, "Packet loss:%d \n\r", quicly_stats.num_packets.lost);
2330 static clib_error_t *
2331 quic_plugin_showstats_command_fn (vlib_main_t * vm,
2332 unformat_input_t * input,
2333 vlib_cli_command_t * cmd)
2335 quic_main_t *qm = &quic_main;
2336 quic_ctx_t *ctx = NULL;
2337 u32 num_workers = vlib_num_workers ();
2339 for (int i = 0; i < num_workers + 1; i++)
2342 pool_foreach (ctx, qm->ctx_pool[i],
2344 if(!(ctx->flags & QUIC_F_IS_LISTENER) && !(ctx->flags & QUIC_F_IS_STREAM))
2345 vlib_cli_output (vm, "%U", quic_format_ctx_stat, ctx);
2353 VLIB_CLI_COMMAND(quic_plugin_crypto_command, static)=
2355 .path = "quic set crypto api",
2356 .short_help = "quic set crypto api [picotls, vpp]",
2357 .function = quic_plugin_crypto_command_fn,
2359 VLIB_CLI_COMMAND(quic_plugin_stats_command, static)=
2361 .path = "show quic stats",
2362 .short_help = "show quic stats",
2363 .function = quic_plugin_showstats_command_fn,
2365 VLIB_PLUGIN_REGISTER () =
2367 .version = VPP_BUILD_VER,
2368 .description = "Quic transport protocol",
2369 .default_disabled = 1,
2373 quic_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
2374 vlib_frame_t * frame)
2380 VLIB_REGISTER_NODE (quic_input_node) =
2382 .function = quic_node_fn,
2383 .name = "quic-input",
2384 .vector_size = sizeof (u32),
2385 .type = VLIB_NODE_TYPE_INTERNAL,
2386 .n_errors = ARRAY_LEN (quic_error_strings),
2387 .error_strings = quic_error_strings,
2392 * fd.io coding-style-patch-verification: ON
2395 * eval: (c-set-style "gnu")